enh(#895): Custom refresh response token pointer

[Rizzato95]

🔗 Linked issue

#895

❓ Type of change

• 📖 Documentation (updates to the documentation, readme or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Added refreshResponseTokenPointer option to allow the token assignment (during the refresh call) to a different property respect to the signIn call.

This is useful in cases where the server returns the token in a property with different names between login and refresh.

📝 Checklist

• I have linked an issue or discussion.
• I have added tests (if possible).
• I have updated the documentation accordingly.

[pkg-pr-new]

Open in Stackblitz

pnpm add https://pkg.pr.new/@sidebase/nuxt-auth@910

commit: a40f28e

[phoenix-ru]

@zoey-kaiser Could you please re-review this?